双源CT对主动脉缩窄的诊断价值

Diagnosis of Aortic Coarctation by Dualsource CT

目的评价双源CT(DSCT)对主动脉缩窄的诊断价值。方法采用西门子DSCT扫描机,连续容积增强扫描,对8例以心悸、气短就诊的患者进行DSCT检查并诊断为主动脉缩窄的病例进行分析。结果8例主动脉缩窄中,主动脉弓缩窄4例,胸主动脉缩窄4例。对所有扫描图像行多平面重组(MPR)及容积再现(VR)、最大密度投影(MIP)、表面阴影成像(SSD)、薄层VR重组。DSCT不仅全部显示缩窄的程度、形态,而且还显示了缩窄处与左锁骨下动脉和未闭动脉导管的关系。结论DSCT是评价主动脉缩窄快捷而有效的影像学技术,具有检查方便、迅速、无创伤、诊断正确率高等优点。

Objective To assess the value of dual-source CT （DSCT） in the diagnosis of aortic coarctation. Methods 8 patients who complained of cardiopalmus and short breath were scanned with DSCT scanner using contrast-enhanced continuous volume scanning （CVS） for establish the diagnosis of aortic aneurysm. Results All the 8 patients were diagnosed as aortic coarctation by DSCTA. In the 8 cases, stenosis was found in aortic arch in 4 patients, and in thoracic aorta in 4 patients. Two-dimensional and threedimensional reformations were performed in all cases by means of MPR, MIP, SSD, VR, respectively. The stenotic segment and the relationship between the stenotic segment and left subclavian artery （patent ductus arteriosus） were clearly displayed on reconstructed images. Conclusion DSCT can provide important information for the diagnosis and treatment of aortic aneurysm, and can be useful for follow-up observation of the patients.